Publications by authors named "J Iwase"
Objectives: To investigate the relationship between the size and location of osteochondral defects in capitellar osteochondritis dissecans (OCD) measured on coronal and sagittal reconstructed computed tomography (CT) images and the clinical outcomes of arthroscopic debridement in adolescent baseball players.
Methods: This retrospective study investigated the clinical outcomes of arthroscopic debridement for capitellar OCD in adolescent baseball players with ≥24 months of follow-up after surgery between 2008 and 2020. On preoperative coronal CT images, medial and lateral distance (%) were used to evaluate the location of the defect.
Article Synopsis
- Early detection and conservative treatment are crucial for the best outcomes in managing capitellar osteochondritis dissecans (OCD) in young baseball players.
- A study conducted in Tokushima, Japan, between 2006 and 2020 revealed that ultrasonographic screening was significantly more effective in identifying OCD compared to physical examinations.
- The prevalence of capitellar OCD among elementary school players was found to be 1.4%, with the incidence increasing from the fourth grade to the sixth grade.
Iliopsoas impingement after total hip arthroplasty is caused by the implant irritating the iliopsoas muscle, but changes in the iliopsoas muscle have not been quantitatively evaluated. This study assessed changes in the surface pressure of the iliopsoas muscle when the implant alignment was varied. Total hip arthroplasty was performed in 10 fresh-frozen cadaveric hips.
View Article and Find Full Text PDFBackground: The Plug-in Gait model (PiG) is commonly used in 3D motion analysis but has limited reliability. Although an improved version of PiG has been developed, called the Conventional Gait Model 2 (CGM2), there is limited evidence on its between-day reliability for running.
Research Question: What is the between-day intraclass correlation coefficient (ICC3,k) and minimum detectable change (MDC) of lower limb kinematics and kinetics for CGM2 during running and does reliability differ between CGM2 and PiG.
Article Synopsis
- * Resection of the medial arm of the iliofemoral ligament significantly increased external rotation, while the conjoined tendon was found to be the primary restraint against internal rotation.
- * Removing multiple stabilizing structures can greatly compromise hip joint stability under axial traction, highlighting the importance of maintaining the iliofemoral ligament and conjoined tendon during THA.